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Angular position sensors - RVDT

  • Aerospace instrumentation
  • Rudder position feedback
  • Rotary servo actuators feedback
  • Valve position control
  • Machine tool equipment
  • Process control
  • Robotic arm position feedback

RVDTs are non contact transducers that incorporate proprietary rotor and coil designs to measure angular position.

Their basic construction eliminates items such as slip rings, rotor windings, contact brushes or wipers that degrade over time and impair reliability. At the same time the coil design achieves extraordinarily high output and low noise.

The coil design comprises a primary and two secondary windings all placed in the stator. There are no windings in the rotor. The secondary windings act as pickup coils detecting the flux change caused by rotation of the rotor. The stator core is a lamination stack of highly permeable magnetic alloy material and the rotor is made of the same material. A very small air gap separates these components. This combination provides for an “all-iron” flux path that provides for very high efficiency resulting in a very high signal to noise ratio and a very low temperature coefficient of scale factor.

  • RVDT Sensor R30A Series

    • Non contact angular transducer
    • Typical excitation voltage: 3Vrms, 10kHz
    • Linearity error: ±0.5% full scale
    • Available measurement range: ±30° (±60° maximum, with increase of non linearity error)

    Image R30A
  • RVDT Sensor R36AS Series

    • Non contact angular transducer
    • Rugged package and connector
    • Typical excitation voltage: 3Vrms, 10kHz
    • Linearity error: ±0.5% full scale
    • Available measurement range: ±30° (±60° maximum, with increase of non linearity error)

    Image R36AS
  • RVDT Sensor RSYN Series

    • Non contact angular transducer
    • Ideal for harsh environment applications
    • Resistant to humidity and salt mist
    • Typical excitation voltage: 7.5Vrms, 3kHz
    • Linearity error: ±0.5% full scale
    • Available measurement range: ±30°

    Image RSYN
  • RVDT Sensor RVIT-15-120i Series

    • Non contact angular transducer
    • Typical excitation voltage: 10 to 28Vdc
    • 4-20mA calibrated output
    • Available measurement range: 0 to 120°

    Image RVIT-15-120i
  • RVDT Sensor RVIT-15-60 Series

    • Non contact angular transducer
    • Typical excitation voltage: +5Vdc
    • Constant scale constant
    • Available measurement range: ±60°

    Image RVIT-15-60
  • RVDT Sensor R120LC Series

    • Non contact angular transducer
    • Wide operation temperature range
    • Typical excitation voltage: 4.75 to 5.25Vdc
    • Linearity error: ±0.5% full scale
    • Available measurement range: ±60°

    Image R120LC
  • RVDT Sensor R30D Series

    • Non contact angular transducer
    • Typical excitation voltage: ±15Vdc
    • Linearity error: ±0.25% full scale
    • Constant scale constant
    • Available measurement range: ±30°

    Image R30D
  • RVDT Sensor R60D Series

    • Non contact angular transducer
    • Typical excitation voltage: ±15Vdc
    • Constant scale constant
    • Available measurement range: ±60°

    Image R60D